Not technically Pixar. It's from seven-ish years before Pixar was founded, and one of the engineers involved later went on to cofound Pixar. So... kinda proto-Pixar.

That's really cool! I remember watching the first short film from Pixar in an art class when I was in middle school, but I'm pleasantly surprised to find that this was not it!

Definitely a very interesting tech demo, as it were!